Pith Number

pith:QMDZLWWA

pith:2019:QMDZLWWAQ7XDN6F5HMO5X5EPLP

not attested not anchored not stored refs pending

On extensions of partial isometries

Mahmood Etedadialiabadi, Su Gao

arxiv:1903.09723 v3 · 2019-03-22 · math.LO · math.FA · math.MG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QMDZLWWAQ7XDN6F5HMO5X5EPLP}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

On Extensions of Partial Isomorphisms

Receipt and verification

First computed	2026-07-05T02:33:14.873682Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

830795dac087ee36f8bd3b1ddbf48f5bc1a6f0d433cd645d7a74693465b93933

Aliases

arxiv: 1903.09723 · arxiv_version: 1903.09723v3 · doi: 10.48550/arxiv.1903.09723 · pith_short_12: QMDZLWWAQ7XD · pith_short_16: QMDZLWWAQ7XDN6F5 · pith_short_8: QMDZLWWA

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QMDZLWWAQ7XDN6F5HMO5X5EPLP \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 830795dac087ee36f8bd3b1ddbf48f5bc1a6f0d433cd645d7a74693465b93933

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bb4d479df3437ce7a20182ec0b5eeb301540a78ec4125141bec14ee125c4c14",
    "cross_cats_sorted": [
      "math.FA",
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2019-03-22T22:21:49Z",
    "title_canon_sha256": "d1480b36178b5ebca508ea392c748fcff089da13451fb5f2a9f7de72895cbd13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.09723",
    "kind": "arxiv",
    "version": 3
  }
}